I'm sure you're just doing the good old business buy low, sell high thing, and I wish you luck. Doing it off the back of a charitable foundation? Not so pretty. Still, whatever floats your boat.
I just query your "stock". 6 available? Given the current supply situation, if you have one Pi, you're lucky. If you have more, then perhaps you have to explain how you got past the "one per person" rule. If you're just hoping to get people to make pre-order payments against you getting the Raspberry Pis in, then it smells dodgy.
Personally, I wouldn't touch your offer with a bargepole, but thats MY opinion,
And as for this topic, there's the potential for more heat than light so I'm locking it.
I'm just a bouncer, splatterers do it with more force.....